A 0.03-lb bullet traveling at 1300 ft/s strikes the 10-lb wooden block and exits the other side at 50 ft/s as shown. Determine the speed of the block just after the bullet exits the block, and also determine how far the block slides before it stops. The coefficient of kinetic friction between the

Question

A 0.03-lb bullet traveling at 1300 ft/s strikes the 10-lb wooden block and exits the other side at 50 ft/s as shown. Determine the speed of the block just after the bullet exits the block, and also determine how far the block slides before it stops. The coefficient of kinetic friction between the block and the surface is { \mu }_{ k } = 0.5.

Accepted Answer

[latex]\begin{aligned} (\underrightarrow{ + }) \quad\quad & \Sigma m_1 u_1 = \Sigma m_2 u_2 \ & (\frac { 0.03 } { 32.2 })(1300)(\frac { 12 } { 13 }) + 0 = (\frac { 10 } { 32.2 }) u_B + (\frac { 0.03 } { 32.2 })(50)(\frac 4 5) \ & v_B = 3.48 ft/s \end{aligned} \ T_1 + \Sigma U_{ 1 - 2 } = T_2 \ \frac 1 2 (\frac { 10 } { 32.2 })(3.48)^2 - 5(d) = 0[/latex]

Question : A 0.03-lb bullet traveling at 1300 ft/s strikes the 10-lb wo...